Gm-CCO type comparator circuit applied to analog-to-digital converter

The embodiment of the invention relates to the technical field of analog-to-digital conversion, in particular to a Gm-CCO type-based comparator circuit applied to an analog-to-digital converter, which improves the precision of a comparator, reduces the overall power consumption of the circuit and improves the reliability of the circuit. The circuit comprises a transconductance amplifier unit, a current hunger-thirst type oscillator unit, a latch unit and a comparison result and reset signal generation unit, the transconductance amplifier unit receives the differential signal, amplifies the differential signal and outputs a first current and a second current; the current hunger-thirst type oscillator unit receives the first current and the second current, carries out annular oscillation and outputs two paths of corresponding pulse levels; the latch unit receives the two paths of pulse levels, latches the two paths of pulse levels, and generates a first output signal and a second output signal; the comparison r